Arithmetic operators for Java operators

First lists all the arithmetic operators

Step Two:

Precautions:

When we use arithmetic operators, remember that the following things are important:

1. The addition operator should be aware that when connecting strings, it is only possible to add strings directly to the string.

2. Division "/" when the two sides are integers, take the integer part, the remainder. When one side is floating-point, divide by normal rule.

　　　　　　3."%" is the divisible-by-remainder symbol, and the fractional remainder is meaningless. The result symbol is the same as the remainder symbol.

4. integer do dividend, 0 can not do divisor, otherwise error.

　　　　　　

What is the difference between the self-increment (decrement) operator above and the previous and subsequent variables?

• Used alone:
  • Put it in front and back of the variable, just like the example above
• Participate in the operation using:
  • Put in front of the variable, increment or decrement it first, and then participate in the operation.
  • At the back of the variable, first participate in the operation, and then self-increment or decrement.

Examples:

Arithmetic operators for Java operators